In a Police Ballistics Test,a 10

Multiple Choice

In a police ballistics test,a 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at rest.The bullet goes through the block almost instantaneously and emerges with 50.0% of its original speed.What is the speed of the block just after the bullet emerges?

A) 1.50 m/s
B) 2.97 m/s
C) 3.00 m/s
D) 273 m/s